1. van Stralen G, von Schmidt Auf Altenstadt JF, Bloemenkamp KW, van Roosmalen J, Hukkelhoven CW. Increasing incidence of postpartum hemorrhage: the Dutch piece of the puzzle. Acta Obstet Gynecol Scand. 2016; 95:1104–10.

2. Reale SC, Easter SR, Xu X, Bateman BT, Farber MK. Trends in postpartum hemorrhage in the United States from 2010 to 2014. Anesth Analg. 2020; 130:e119–22.

3. Yildiz K, Dogru K, Dalgic H, Serin IS, Sezer Z, Madenoglu H, et al. Inhibitory effects of desflurane and sevoflurane on oxytocin-induced contractions of isolated pregnant human myometrium. Acta Anaesthesiol Scand. 2005; 49:1355–9.

4. Kawakita T, Mokhtari N, Huang JC, Landy HJ. Evaluation of risk-assessment tools for severe postpartum hemorrhage in women undergoing cesarean delivery. Obstet Gynecol. 2019; 134:1308–16.

5. Butwick AJ, Ramachandran B, Hegde P, Riley ET, El-Sayed YY, Nelson LM. Risk factors for severe postpartum hemorrhage after cesarean delivery: case-control studies. Anesth Analg. 2017; 125:523–32.
6. Park JI, Park SH, Kang MS, Kang GW, Kim ST. Evaluation of changes in anesthetic methods for cesarean delivery: an analysis for 5 years using the big data of the Korean Health Insurance Review and Assessment Service. Anesth Pain Med (Seoul). 2020; 15:305–13.

7. Wong CA. General anesthesia is unacceptable for elective cesarean section. Int J Obstet Anesth. 2010; 19:209–12.

8. Juang J, Gabriel RA, Dutton RP, Palanisamy A, Urman RD. Choice of anesthesia for cesarean delivery: an analysis of the national anesthesia clinical outcomes registry. Anesth Analg. 2017; 124:1914–7.
9. Butwick AJ, Palanisamy A. Mode of anaesthesia for caesarean delivery and maternal morbidity: can we overcome confounding by indication? Br J Anaesth. 2018; 120:621–3.

10. Dogru K, Dalgic H, Yildiz K, Sezer Z, Madenoglu H. The direct depressant effects of desflurane and sevoflurane on spontaneous contractions of isolated gravid rat myometrium. Int J Obstet Anesth. 2003; 12:74–8.

11. Beilin Y. Maternal hemorrhage-regional versus general anesthesia: does it really matter? Anesth Analg. 2018; 127:805–7.
12. Rouse DJ, MacPherson C, Landon M, Varner MW, Leveno KJ, Moawad AH, et al. National Institute of Child Health and Human Development Maternal-Fetal Medicine Units Network. Blood transfusion and cesarean delivery. Obstet Gynecol. 2006; 108:891–7.
13. Guay J. The effect of neuraxial blocks on surgical blood loss and blood transfusion requirements: a meta-analysis. J Clin Anesth. 2006; 18:124–8.

14. Afolabi BB, Lesi FE. Regional versus general anaesthesia for caesarean section. Cochrane Database Syst Rev. 2012; 10:CD004350.

15. Sung TY, Jee YS, You HJ, Cho CK. Comparison of the effect of general and spinal anesthesia for elective cesarean section on maternal and fetal outcomes: a retrospective cohort study. Anesth Pain Med (Seoul). 2021; 16:49–55.

16. Elena R, Pamela F, Mrinalini B. Effects of anesthesia on uterine activity, progress in labor and outcomes. Shnider and Levinson's: anesthesia for obstetrics. 5th ed. In : Suresh MS, Segal S, Preston RL, Fernando R, LaToya Mason C, editors. Philadelphia (PA): Lippincott Williams & Wilkins;2013. p. 156.
17. Hawkins JL. Excess in moderation: general anesthesia for cesarean delivery. Anesth Analg. 2015; 120:1175–7.
18. Qian X, Li P, Shi SQ, Garfield RE, Liu H. Uterine and abdominal muscle electromyographic activities in control and PCEA-treated nulliparous women during the second stage of labor. Reprod Sci. 2017; 24:1214–20.

19. Ng K, Parsons J, Cyna AM, Middleton P. Spinal versus epidural anaesthesia for caesarean section. Cochrane Database Syst Rev. 2004; 2:CD003765.

20. Schewe JC, Komusin A, Zinserling J, Nadstawek J, Hoeft A, Hering R. Effects of spinal anaesthesia versus epidural anaesthesia for caesarean section on postoperative analgesic consumption and postoperative pain. Eur J Anaesthesiol. 2009; 26:52–9.

21. Zhang J, Troendle J, Reddy UM, Laughon SK, Branch DW, Burkman R, et al. Consortium on Safe Labor. Contemporary cesarean delivery practice in the United States. Am J Obstet Gynecol. 2010; 203:326.e1–10.
22. Bateman BT, Berman MF, Riley LE, Leffert LR. The epidemiology of postpartum hemorrhage in a large, nationwide sample of deliveries. Anesth Analg. 2010; 110:1368–73.

23. Nyfløt LT, Sandven I, Stray-Pedersen B, Pettersen S, Al-Zirqi I, Rosenberg M, et al. Risk factors for severe postpartum hemorrhage: a case-control study. BMC Pregnancy Childbirth. 2017; 17:17.

24. Belghiti J, Kayem G, Dupont C, Rudigoz RC, Bouvier-Colle MH, Deneux-Tharaux C. Oxytocin during labour and risk of severe postpartum haemorrhage: a population-based, cohort-nested case-control study. BMJ Open. 2011; 1:e000514.

25. Mhyre JM, Shilkrut A, Kuklina EV, Callaghan WM, Creanga AA, Kaminsky S, et al. Massive blood transfusion during hospitalization for delivery in New York State, 1998-2007. Obstet Gynecol. 2013; 122:1288–94.

26. Masuzawa Y, Yaeko K. Uterine activity during the two hours after placental delivery among low-risk pregnancies: an observational study. J Matern Fetal Neonatal Med. 2017; 30:2446–51.
